Light-emitting display apparatus

ABSTRACT

A display apparatus includes a substrate including a bending area between a first area and a second area, and bent along a bending axis; a display unit provided over the first area of the substrate; and a wiring unit provided over the bending area and including a wiring crossing the bending axis, wherein the wiring includes a first central wiring having a straight line shape, a second central wiring parallel-positioned at one side of the first central wiring by having a certain distance from the first central wiring, and a first bridge wiring obliquely connecting the first central wiring with the second central wiring.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Divisional of U.S. patent application Ser. No.16/398,631, filed on Apr. 30, 2019, and claims priority from and thebenefit of Korean Patent Application No. 10-2018-0050680, filed on May2, 2018, each of which is hereby incorporated by reference for allpurposes as if fully set forth herein.

BACKGROUND Field

Exemplary embodiments of the invention relate generally to a displayapparatus, and more specifically, to a display apparatus with anincreased service life and in which the occurrence of defects such asdisconnection in a manufacturing procedure may be minimized.

Discussion of the Background

In general, a display apparatus has a display unit over a substrate. Bybending at least a part of the display apparatus, visibility at variousangles may be improved, or an area of a display region may be decreased.

However, when a bent display apparatus according to the related art ismanufactured, a defect may occur or a service life of the displayapparatus may be reduced.

The above information disclosed in this Background section is only forunderstanding of the background of the inventive concepts, and,therefore, it may contain information that does not constitute priorart.

SUMMARY

Devices constructed according to exemplary embodiments of the inventionsolve various problems, including the aforementioned problem. Exemplaryembodiments provide a display apparatus with an increased service lifeand in which the occurrence of a defect such as disconnection in amanufacturing procedure may be minimized.

However, it should be understood that embodiments described hereinshould be considered in a descriptive sense only and not for limitationof the disclosure. Additional features of the inventive concepts will beset forth in the description which follows, and in part will be apparentfrom the description, or may be learned by practice of the inventiveconcepts.

In accordance with an exemplary embodiment, a display apparatus includesa substrate including a bending area between a first area and a secondarea, and bent along a bending axis; a display unit provided over thefirst area of the substrate; and a wiring unit provided over the bendingarea and including a plurality of wirings crossing the bending axis,wherein each of the plurality of wirings includes a central wiringhaving a straight shape, at least one first auxiliary wiring extendingin one direction with respect to the central wiring, and at least onesecond auxiliary wiring extending in another direction with respect tothe central wiring, wherein the at least one first auxiliary wiring andthe at least one second auxiliary wiring are alternately provided bypartially overlapping each other.

Each of the plurality of wirings may include a first junction where oneend of the at least one first auxiliary wiring contacts the centralwiring, a second junction where the other end of the at least one firstauxiliary wiring contacts the central wiring, a third junction where oneend of the at least one second auxiliary wiring contacts the centralwiring, and a fourth junction where the other end of the at least onesecond auxiliary wiring contacts the central wiring, wherein the fourthjunction is provided between the first junction and the second junction.

Each of the plurality of wirings further may include at least one thirdauxiliary wiring extending in the other direction with respect to thecentral wiring and provided most adjacent to the at least one secondauxiliary wiring, a fifth junction where one end of the at least onethird auxiliary wiring contacts the central wiring, and a sixth junctionwhere the other end of the at least one third auxiliary wiring contactsthe central wiring, wherein the fifth junction is provided between thefirst junction and the second junction.

The fourth junction and the fifth junction may be spaced apart from eachother by a certain interval.

On a plane, a shape formed by at least the portion of the central wiringand each of the at least one first auxiliary wiring and the at least onesecond auxiliary wiring may include a trapezoid.

The at least one first auxiliary wiring may include a first straightline spaced apart from the central wiring by a certain distance, a firstconnection part connecting one end of the first straight line with thecentral wiring, and a second connection part connecting the other end ofthe first straight line with the central wiring.

The first straight line and the central wiring may be parallel to eachother.

Each of the first connection part and the second connection part may beobliquely arranged to have an obtuse angle with the first straight lineand have an acute angle with the central wiring, the acute angle rangingfrom about 30 degrees to about 60 degrees.

The at least one second auxiliary wiring may include a second straightline spaced apart from the central wiring by a certain distance, a thirdconnection part connecting one end of the second straight line with thecentral wiring, and a fourth connection part connecting the other end ofthe second straight line with the central wiring, wherein the secondstraight line and the central wiring are parallel to each other.

The first connection part and the fourth connection part may be parallelto each other, and the second connection part and the third connectionpart may be parallel to each other.

The central wiring may be provided orthogonal to the bending axis.

The wiring unit may be a data wiring unit configured to transmit a datasignal to the display unit.

In accordance with another exemplary embodiment, a display apparatusincludes a substrate including a bending area between a first area and asecond area, and bent along a bending axis; a display unit provided overthe first area of the substrate; and a wiring unit provided over thebending area and including a wiring crossing the bending axis, whereinthe wiring includes a first central wiring having a straight line shape,a second central wiring parallel-positioned at one side of the firstcentral wiring by having a certain distance from the first centralwiring, and a first bridge wiring obliquely connecting the first centralwiring with the second central wiring.

The wiring may further include a second bridge wiring that is spacedapart from the first bridge wiring by a certain distance and obliquelyconnects the first central wiring with the second central wiring,wherein the first bridge wiring and the second bridge wiring areparallel to each other.

The wiring may further include a third central wiring having a straightline shape and parallel-positioned at the other side of the firstcentral wiring by having a certain distance from the first centralwiring, and a third bridge wiring obliquely connecting the first centralwiring with the third central wiring, wherein the third bridge wiring isprovided between the first bridge wiring and the second bridge wiring.

The display apparatus may further include a second bridge wiring that isspaced apart from the first bridge wiring by a certain distance andobliquely connects the first central wiring with the second centralwiring, wherein the first bridge wiring and the second bridge wiringcross each other.

The wiring may further include a third central wiring having a straightline shape and parallel-positioned at the other side of the firstcentral wiring by having a certain distance from the first centralwiring, and a third bridge wiring obliquely connecting the first centralwiring with the third central wiring, wherein the third bridge wiring isprovided between the first bridge wiring and the second bridge wiring.

The wiring may further include a fourth bridge wiring that obliquelyconnects the first central wiring with the third central wiring and isspaced apart from the third bridge wiring by a certain distance, whereinthe first bridge wiring is provided between the third bridge wiring andthe fourth bridge wiring.

The first central wiring and the second central wiring may be providedorthogonal to the bending axis.

The wiring unit may be a data wiring unit configured to transmit a datasignal to the display unit.

It is to be understood that both the foregoing general description andthe following detailed description are exemplary and explanatory and areintended to provide further explanation of the invention as claimed.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a furtherunderstanding of the invention and are incorporated in and constitute apart of this specification, illustrate exemplary embodiments of theinvention, and together with the description serve to explain theinventive concepts.

FIG. 1 is a perspective view illustrating a portion of a displayapparatus according to an exemplary embodiment.

FIG. 2 is a plan view illustrating a structure of the display apparatusof FIG. 1 , which is not bent.

FIG. 3 is an equivalent circuit diagram of one of pixels of the displayapparatus of FIG. 1 .

FIG. 4 is a plan view illustrating a magnified part IV of the displayapparatus of FIG. 2 .

FIG. 5 is a plan view illustrating a structure of a wiring according toan exemplary embodiment.

FIG. 6 is a plan view of a structure of a wiring according to anotherexemplary embodiment.

FIG. 7 is a plan view of a structure of a wiring according to anotherexemplary embodiment.

FIG. 8 is a plan view illustrating a cross-section of the displayapparatus of FIGS. 1 and 2 , taken along lines VIII-VIII′ andVIII″-VIII′″ of FIG. 2 .

DETAILED DESCRIPTION

In the following description, for the purposes of explanation, numerousspecific details are set forth in order to provide a thoroughunderstanding of various exemplary embodiments or implementations of theinvention. As used herein “embodiments” and “implementations” areinterchangeable words that are non-limiting examples of devices ormethods employing one or more of the inventive concepts disclosedherein. It is apparent, however, that various exemplary embodiments maybe practiced without these specific details or with one or moreequivalent arrangements. In other instances, well-known structures anddevices are shown in block diagram form in order to avoid unnecessarilyobscuring various exemplary embodiments. Further, various exemplaryembodiments may be different, but do not have to be exclusive. Forexample, specific shapes, configurations, and characteristics of anexemplary embodiment may be used or implemented in another exemplaryembodiment without departing from the inventive concepts.

Unless otherwise specified, the illustrated exemplary embodiments are tobe understood as providing exemplary features of varying detail of someways in which the inventive concepts may be implemented in practice.Therefore, unless otherwise specified, the features, components,modules, layers, films, panels, regions, and/or aspects, etc.(hereinafter individually or collectively referred to as “elements”), ofthe various embodiments may be otherwise combined, separated,interchanged, and/or rearranged without departing from the inventiveconcepts.

The use of cross-hatching and/or shading in the accompanying drawings isgenerally provided to clarify boundaries between adjacent elements. Assuch, neither the presence nor the absence of cross-hatching or shadingconveys or indicates any preference or requirement for particularmaterials, material properties, dimensions, proportions, commonalitiesbetween illustrated elements, and/or any other characteristic,attribute, property, etc., of the elements, unless specified. Further,in the accompanying drawings, the size and relative sizes of elementsmay be exaggerated for clarity and/or descriptive purposes. When anexemplary embodiment may be implemented differently, a specific processorder may be performed differently from the described order. Forexample, two consecutively described processes may be performedsubstantially at the same time or performed in an order opposite to thedescribed order. Also, like reference numerals denote like elements.

When an element, such as a layer, is referred to as being “on,”“connected to,” or “coupled to” another element or layer, it may bedirectly on, connected to, or coupled to the other element or layer orintervening elements or layers may be present. When, however, an elementor layer is referred to as being “directly on,” “directly connected to,”or “directly coupled to” another element or layer, there are nointervening elements or layers present. To this end, the term“connected” may refer to physical, electrical, and/or fluid connection,with or without intervening elements. Further, the x-axis, the y-axis,and the z-axis are not limited to three axes of a rectangular coordinatesystem, such as the x, y, and z-axes, and may be interpreted in abroader sense. For example, the x-axis, the y-axis, and the z-axis maybe perpendicular to one another, or may represent different directionsthat are not necessarily perpendicular to one another. For the purposesof this disclosure, “at least one of X, Y, and Z” and “at least oneselected from the group consisting of X, Y, and Z” may be construed as Xonly, Y only, Z only, or any combination of two or more of X, Y, and Z,such as, for instance, XYZ, XYY, YZ, and ZZ. As used herein, the term“and/or” includes any and all combinations of one or more of theassociated listed items.

Although the terms “first,” “second,” etc. may be used herein todescribe various types of elements, these elements should not be limitedby these terms. These terms are used to distinguish one element fromanother element. Thus, a first element discussed below could be termed asecond element without departing from the teachings of the disclosure.

Spatially relative terms, such as “beneath,” “below,” “under,” “lower,”“above,” “upper,” “over,” “higher,” “side” (e.g., as in “sidewall”), andthe like, may be used herein for descriptive purposes, and, thereby, todescribe one elements relationship to another element(s) as illustratedin the drawings. Spatially relative terms are intended to encompassdifferent orientations of an apparatus in use, operation, and/ormanufacture in addition to the orientation depicted in the drawings. Forexample, if the apparatus in the drawings is turned over, elementsdescribed as “below” or “beneath” other elements or features would thenbe oriented “above” the other elements or features. Thus, the exemplaryterm “below” can encompass both an orientation of above and below.Furthermore, the apparatus may be otherwise oriented (e.g., rotated 90degrees or at other orientations), and, as such, the spatially relativedescriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particularembodiments and is not intended to be limiting. As used herein, thesingular forms, “a,” “an,” and “the” are intended to include the pluralforms as well, unless the context clearly indicates otherwise. Moreover,the terms “comprises,” “comprising,” “includes,” and/or “including,”when used in this specification, specify the presence of statedfeatures, integers, steps, operations, elements, components, and/orgroups thereof, but do not preclude the presence or addition of one ormore other features, integers, steps, operations, elements, components,and/or groups thereof. It is also noted that, as used herein, the terms“substantially,” “about,” and other similar terms, are used as terms ofapproximation and not as terms of degree, and, as such, are utilized toaccount for inherent deviations in measured, calculated, and/or providedvalues that would be recognized by one of ordinary skill in the art.

As is customary in the field, some exemplary embodiments are describedand illustrated in the accompanying drawings in terms of functionalblocks, units, and/or modules. Those skilled in the art will appreciatethat these blocks, units, and/or modules are physically implemented byelectronic (or optical) circuits, such as logic circuits, discretecomponents, microprocessors, hard-wired circuits, memory elements,wiring connections, and the like, which may be formed usingsemiconductor-based fabrication techniques or other manufacturingtechnologies. In the case of the blocks, units, and/or modules beingimplemented by microprocessors or other similar hardware, they may beprogrammed and controlled using software (e.g., microcode) to performvarious functions discussed herein and may optionally be driven byfirmware and/or software. It is also contemplated that each block, unit,and/or module may be implemented by dedicated hardware, or as acombination of dedicated hardware to perform some functions and aprocessor (e.g., one or more programmed microprocessors and associatedcircuitry) to perform other functions. Also, each block, unit, and/ormodule of some exemplary embodiments may be physically separated intotwo or more interacting and discrete blocks, units, and/or moduleswithout departing from the scope of the inventive concepts. Further, theblocks, units, and/or modules of some exemplary embodiments may bephysically combined into more complex blocks, units, and/or moduleswithout departing from the scope of the inventive concepts.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this disclosure is a part. Terms,such as those defined in commonly used dictionaries, should beinterpreted as having a meaning that is consistent with their meaning inthe context of the relevant art and should not be interpreted in anidealized or overly formal sense, unless expressly so defined herein.

In another embodiment, an order of processes may be different from thatis described. For example, two processes that are sequentially describedmay be substantially simultaneously performed, or may be performed in anopposite order to the described order.

A display apparatus according to one or more embodiments is configuredto display an image, and may include a liquid crystal display, anelectrophoretic display, an organic light-emitting display, an inorganiclight-emitting display, a field emission display, a surface-conductionelectron-emitter display, a plasma display, a cathode ray display, orthe like.

Though an organic light-emitting display apparatus is described as adisplay apparatus according to an embodiment, the display apparatus isnot limited thereto and various types of display apparatuses may beused.

FIG. 1 is a perspective view illustrating a portion of a displayapparatus according to an embodiment, and FIG. 2 is a plan viewillustrating a structure of the display apparatus of FIG. 1 , in a statein which is not bent.

Referring to FIGS. 1 and 2 , a substrate 100 included in the displayapparatus according to the present embodiment has a bending area BAbetween a first area 1A and a second area 2A. The bending area BA isprovided between the first area 1A and the second area 2A in anotherdirection (a +y direction) that crosses a direction (a +x direction). Asillustrated in FIG. 1 , the substrate 100 is bent with respect to abending axis BAX extending in the direction (the +x direction).

The substrate 100 may include various materials and may be flexible orbendable. For example, the substrate 100 may include polymer resins suchas polyether sulphone (PES), polyacrylate (PAR), polyetherimide (PEI),polyethylene naphthalate (PEN), polyethylene terephthalate (PET),polyphenylene sulfide (PPS), polyarylate, polyimide (PI), polycarbonate(PC), or cellulose acetate propionate (CAP).

A display area DA is included in the first area 1A. That is, asillustrated in FIG. 2 , the first area 1A includes the display area DAand a portion of a peripheral area PA outside the display area DA. Theperipheral area PA includes the bending area BA and the second area 2A.

Referring to FIG. 2 , a display apparatus 1 includes a display unit 10over the substrate 100. The display unit 10 includes pixels P that areconnected to a scan line SL extending in a y-direction and a data lineDL and a drive voltage line PL extending in an x-direction that crossesthe y-direction. The display unit 10 provides an image via light emittedfrom the pixels P, and defines the display area DA.

Each of the pixels P may emit red light, green light, blue light, orwhite light. Each pixel P may include a display device, and the displaydevice may include an organic light-emitting diode. In the presentspecification, a pixel P indicates a pixel that emits one of red light,green light, blue light, and white light, as described above. Astructure of the pixel P will be described in detail with reference toFIG. 3 .

The peripheral area PA is arranged outside the display area DA. Forexample, the peripheral area PA may surround the display area DA. Theperipheral area PA is an area in which the pixels P are not arranged,and corresponds to a non-display area that does not provide an image. Inthe present embodiment, the bending area BA may be defined as a part ofthe display area DA, and thus, the bending area BA may be a non-displayarea that does not provide an image.

A drive circuit, e.g., first and second drive circuits 20 and 30, a padunit 40, a drive power supply wiring 60, and a common power supplywiring 70 may be arranged on the peripheral area PA.

The first and second drive circuits 20 and 30 are arranged on theperipheral area PA of the substrate 100, and generate and transmit ascan signal to each pixel P via the scan line SL. For example, the firstdrive circuit 20 may be positioned on the left of the display unit 10,and the second drive circuit 30 may be positioned on the right of thedisplay unit 10, but the present disclosure is not limited thereto. Inanother embodiment, only one scan drive circuit may be arranged.

The pad unit 40 is arranged at an end of the substrate 100, and includesa plurality of pads 41, 42, 44, and 45. The pad unit 40 may be exposedby not being covered by an insulating layer and may be electricallyconnected to a flexible printed circuit board FPCB. The pad unit 40 maybe arranged at a side of the substrate 100, and the first and seconddrive circuits 20 and 30 may not be arranged at the side.

The flexible printed circuit board FPCB electrically connects acontroller 90 to the pad unit 40, and a signal or power from thecontroller 90 is delivered via connection wirings 21, 31, 51, 61, and 71that are connected to the pad unit 40.

The controller 90 receives a vertical synchronization signal, ahorizontal synchronization signal, and a clock signal and then generatesa control signal to control driving of the first and second drivecircuits 20 and 30, the generated control signal may be transmitted toeach of the first and second drive circuits 20 and 30 via the connectionwirings 21 and 31 and the pad 44 that are connected to the flexibleprinted circuit board FPCB, scan signals from the first and second drivecircuits 20 and 30 may be provided to each pixel P via the scan line SL.Then, the controller 90 provides drive power ELVDD and common powerELVSS to each of the drive power supply wiring 60 and the common powersupply wiring 70 via the connection wirings 61 and 71 and the pads 42and 45 that are connected to the flexible printed circuit board FPCB.The drive power ELVDD may be provided to each pixel P via a drivevoltage line PL, and the common power ELVSS may be provided to a commonelectrode of each pixel P.

A data drive circuit 80 may be arranged on the flexible printed circuitboard FPCB. The data drive circuit 80 provides a data signal to eachpixel P. The data signal of the data drive circuit 80 is provided toeach pixel P via the connection wiring 51 (hereinafter, also referred toas the wiring 51) connected to the pad 41 and the data line DL connectedto the wiring 51. FIG. 2 illustrates the embodiment in which the datadrive circuit 80 is arranged on the flexible printed circuit board FPCB,but the present disclosure is not limited thereto. In anotherembodiment, the data drive circuit 80 may be arranged on the peripheralarea PA of the substrate 100.

The drive power supply wiring 60 may be arranged on the peripheral areaPA. For example, the drive power supply wiring 60 may be providedbetween the pad unit 40 and a side of the display unit 10, the sidebeing adjacent to the pad unit 40. The drive power ELVDD that isprovided via the connection wiring 61 connected to the pad 42 may besupplied to each pixel P via the drive voltage line PL.

The common power supply wiring 70 is arranged on the peripheral area PA,and may partially surround the display unit 10. For example, the commonpower supply wiring 70 has a loop shape that is open to the side of thedisplay unit 10, the side being adjacent to the pad unit 40. The commonpower supply wiring 70 may extend along edges of the substrate 100,except for the pad unit 40.

The common power supply wiring 70 of FIG. 2 is electrically connected tothe connection wiring 71 connected to the pad 45, and provides thecommon power ELVSS to an opposite electrode 330 (e.g., a cathode, seeFIG. 8 ) of the organic light-emitting diode of each pixel P. FIG. 2illustrates the embodiment in which the common power supply wiring 70has the loop shape having an open side, partially surrounds the displayunit 10, and partially overlaps the connection wiring 71. The connectionwiring 71 and the common power supply wiring 70 may be connected via aninsulating layer arranged therebetween, e.g., via a contact hole CNT ofan inorganic insulating layer, and a connection area between theconnection wiring 71 and the common power supply wiring 70, i.e., thecontact hole CNT, may be adjacent to the side of the display unit 10toward the pad unit 40. In another embodiment, the common power supplywiring 70 may be directly connected to the pad 45, without separatelyhaving the connection wiring 71.

Although not illustrated, a thin-film encapsulation unit (not shown)configured to encapsulate the display unit 10 from the outside may befurther arranged on the display unit 10. The thin-film encapsulationunit (not shown) may be a multilayer in which an inorganic layer and anorganic layer are alternately stacked. The thin-film encapsulation unit(not shown) may cover the display unit 10 and circuit units (e.g., thefirst and second drive circuits 20 and 30, and the common power supplywiring 70) on the peripheral area PA, and may extend to the edges of thesubstrate 100.

FIG. 3 is an equivalent circuit diagram of one of the pixels of thedisplay apparatus 1 of FIG. 1 .

Referring to FIG. 3 , a pixel P may include a pixel circuit PC connectedto a scan line SL and a data line DL, and an organic light-emittingdiode OLED connected to the pixel circuit PC. The pixel circuit PCincludes a driving thin-film transistor Td, a switching thin-filmtransistor Ts, and a storage capacitor Cst. The switching thin-filmtransistor Ts is connected to the scan line SL and the data line DL, andtransmits a data signal to the driving thin-film transistor Td, the datasignal being input via the data line DL in response to a scan signalthat is input via the scan line SL.

The storage capacitor Cst is connected to the switching thin-filmtransistor Ts and a drive voltage line PL and storages voltagecorresponding to a difference between voltage received from theswitching thin-film transistor Ts and drive power ELVDD supplied to thedrive voltage line PL.

The driving thin-film transistor Td is connected to the drive voltageline PL and the storage capacitor Cst, and may control driving currentflowing from the drive voltage line PL to the organic light-emittingdiode OLED, in response to the voltage stored in the storage capacitorCst. The organic light-emitting diode OLED may emit light havingpredetermined luminance, due to the driving current. For example, theorganic light-emitting diode OLED may emit red light, green light, bluelight, or white light.

FIG. 3 illustrates the embodiment in which the pixel P includes twothin-film transistors and one storage thin-film transistor, but thepresent disclosure is not limited thereto. In another embodiment, thepixel circuit PC of the pixel P may be variously modified to include atleast three thin-film transistors or at least two storage thin-filmtransistors.

Referring back to FIG. 2 , the bending area BA may be positioned in anarea of the peripheral area PA in which the connection wirings 21, 31,51, 61, and 71 are fanned out, thus, the connection wirings 21, 31, 51,61, and 71 may be arranged on the bending area BA. The bending area BAis bent with respect to the bending axis BAX as illustrated in FIG. 1 ,and in a process where the bending area BA is bent with respect to thebending axis BAX, stress concentrates on the connection wirings 21, 31,51, 61, and 71 on the bending area BA, and thus, there is a problem of adefect such as disconnection. In particular, the wiring 51 of a wiringunit 50, which is connected to the data line D and is from among theconnection wirings 21, 31, 51, 61, and 71, includes a large number oflines that are sequentially arrayed at narrow intervals, and thus, thewiring 51 is susceptible to stress, compared to other lines.

To solve the problem, the display apparatus according to the presentembodiment is resilient against stress by having the wiring unit 50above the bending area BA, and has a structure capable of detouring acrack even if the crack occurs in a specific part of the wiring 51, suchthat it is possible to prevent complete disconnection of the wiring 51.

FIG. 4 is a plan view illustrating a magnified part IV of the displayapparatus 1 of FIG. 2 , and FIG. 5 is a plan view illustrating astructure of a wiring according to an exemplary embodiment.

Referring to FIG. 4 , the wiring unit 50 above the bending area BA mayinclude a plurality of wirings 51. The wiring unit 50 may provide, toeach pixel P, a data signal received from the data drive circuit 80 ofFIG. 2 .

The plurality of wirings 51 may be arranged on the bending area BA andmay cross the bending axis BAX. In the present embodiment, the pluralityof wirings 51 are orthogonal to the bending axis BAX, but the presentdisclosure is not limited thereto. As illustrated in FIG. 4 , each ofthe plurality of wirings 51 may have a pattern that constantly repeatson a plane. Each of the plurality of wirings 51 may have the pattern onthe bending area BA, and may have a straight line shape in the firstarea 1A and the second area 2A that are not bending areas. However,according to a design, some patterns of the plurality of wirings 51 onthe bending area BA may be arranged on a contact area between thebending area BA and the first area 1A or may be arranged on a contactarea between the bending area BA and the second area 2A.

Referring to FIG. 5 , a structure of the wiring 51 from among theplurality of wirings 51 of the wiring unit 50 is illustrated. Asillustrated in FIG. 4 , because structures of the plurality of wirings51 on the bending area BA are all equal, the structure of the wiring 51will now be described.

The wiring 51 may include a central wiring CL having a straight shape,at least one first auxiliary wiring SL1 extending in one direction withrespect to the central wiring CL, at least one second auxiliary wiringSL2 extending in another direction with respect to the central wiringCL, and a third auxiliary wiring SL3. The at least one first auxiliarywiring SL1 (hereinafter, the first auxiliary wiring SL1), the at leastone second auxiliary wiring SL2 (hereinafter, the second auxiliarywiring SL2), and the third auxiliary wiring SL3 that are selectivelypositioned at either side of the central wiring CL may be portions ofthe wiring 51, the portions being distinguished depending on theirshapes, and may be integrally formed.

The central wiring CL may have a straight shape extending along one axison an entire region of the bending area BA. The straight shape does notcorrespond to a particular portion of the central wiring CL but, on theentire region of the bending area BA, the central wiring CL has thestraight shape without having a bent portion. The central wiring CL maybe understood as a main wiring configured to function as a center of thestructure of the wiring 51.

In a comparative example, in a case where the central wiring CL has abent portion or a curved inflection portion to reduce of stress appliedto wirings of the bending area BA, stress is rather increased at thebent portion or the curved inflection portion such that a crack mayoccur. Accordingly, in the display apparatus according to the presentembodiment, the central wiring CL has the straight shape such thatstress that is applied to the wiring 51 is dispersed on the entireregion of the bending area BA, and thus it is possible to prevent stressfrom being concentrated at a particular portion.

The first auxiliary wiring SL1, the second auxiliary wiring SL2, and thethird auxiliary wiring SL3 may be selectively positioned at either sideof the central wiring CL. The first auxiliary wiring SL1, the secondauxiliary wiring SL2, and the third auxiliary wiring SL3 may bealternately arranged with respect to the central wiring CL. Asillustrated in FIG. 4 , even when the first auxiliary wiring SL1, thesecond auxiliary wiring SL2, and the third auxiliary wiring SL3 arealternately arranged with respect to the central wiring CL, the firstauxiliary wiring SL1 and the second auxiliary wiring SL2 may partiallyoverlap each other, and the first auxiliary wiring SL1 and the thirdauxiliary wiring SL3 may partially overlap each other. In this regard,the term ‘overlap’ may mean that, on a plane, the first auxiliary wiringSL1 and the second auxiliary wiring SL2 do not completely alternate witheach other but may partially overlap each other in few regions.

The first auxiliary wiring SL1, the second auxiliary wiring SL2, and thethird auxiliary wiring SL3 may be understood as detour wirings connectedto the central wiring CL so as to prevent complete disconnection of thewiring 51 when a crack occurs at the central wiring CL.

The wiring 51 may include a first junction C1 where one end of the firstauxiliary wiring SL1 contacts the central wiring CL, a second junctionC2 where the other end of the first auxiliary wiring SL1 contacts thecentral wiring CL, a third junction C3 where one end of the secondauxiliary wiring SL2 contacts the central wiring CL, and a fourthjunction C4 where the other end of the second auxiliary wiring SL2contacts the central wiring CL. In the present embodiment, the fourthjunction C4 may be provided between the first junction C1 and the secondjunction C2. The fact that the fourth junction C4 is provided betweenthe first junction C1 and the second junction C2 may mean that the firstauxiliary wiring SL1 and the second auxiliary wiring SL2 may partiallyoverlap each other as described above.

Equally, the wiring 51 may include a fifth junction C5 where one end ofthe third auxiliary wiring SL3 contacts the central wiring CL, and asixth junction C6 where the other end of the third auxiliary wiring SL3contacts the central wiring CL. In the present embodiment, the fifthjunction C5 may be provided between the first junction C1 and the secondjunction C2. The fact that the fifth junction C5 is provided between thefirst junction C1 and the second junction C2 may mean that the firstauxiliary wiring SL1 and the second auxiliary wiring SL2 may partiallyoverlap each other as described above.

Referring to FIG. 5 , both the fourth junction C4 and the fifth junctionC5 may be provided between the first junction C1 and the second junctionC2. In this regard, the fourth junction C4 and the fifth junction C5 maybe spaced apart from each other by a distance d1. To position the fourthjunction C4 and the fifth junction C5 by having a certain distancetherebetween may mean that the second auxiliary wiring SL2 and the thirdauxiliary wiring SL3 that are most adjacent to each other are spacedapart from each other. In a comparative example, when the fourthjunction C4 and the fifth junction C5 contact each other, stress isconcentrated thereto, and thus, the fourth junction C4 and the fifthjunction C5 may be spaced apart from each other to disperse stress.

As illustrated in FIG. 5 , at least a portion of the central wiring CLand the first auxiliary wiring SL1, at least a portion of the centralwiring CL and the second auxiliary wiring SL2, and at least a portion ofthe central wiring CL and the third auxiliary wiring SL3 may each form aclosed polygon. In the present embodiment, on a plane, a shape formed byat least the portion of the central wiring CL and the first auxiliarywiring SL1 may be a trapezoid. This is the same in the second auxiliarywiring SL2 and the third auxiliary wiring SL3. In this manner, shapesformed by the first auxiliary wiring SL1, the second auxiliary wiringSL2, and the third auxiliary wiring SL3 may be different from each otheronly in locations and may be equal to each other.

Describing with reference to the first auxiliary wiring SL1, the firstauxiliary wiring SL1 may include a first straight line L1 spaced apartfrom the central wiring CL by a distance d2, a first connection part S1connecting one end of the first straight line L1 with the central wiringCL, and a second connection part S2 connecting the other end of thefirst straight line L1 with the central wiring C. The first straightline L1 may be parallel to the central wiring CL, and the firstconnection part S1 and the second connection part S2 may be arrangedwhile having an angle with the first straight line L1.

Referring to FIG. 5 , the first connection part S1 and the secondconnection part S2 may each be obliquely arranged to have an obtuseangle with the first straight line L1 and have an acute angle with thecentral wiring CL. With respect to obliqueness, in the presentembodiment, the first connection part S1 or the second connection partS2 may be arranged to have an angle θ1 ranging from about 30 degrees toabout 60 degrees with respect to a reference line (an X-axis). This maymean that an angle formed between the first connection part S1 or thesecond connection part S2 and the central wiring CL may range from about30 degrees to about 60 degrees.

Similarly, the second auxiliary wiring SL2 may include a second straightline L2 spaced apart from the central wiring CL by the distance d2, athird connection part S3 connecting one end of the second straight lineL2 with the central wiring CL, and a fourth connection part S4connecting the other end of the second straight line L2 with the centralwiring C. The second straight line L2 may be parallel to the centralwiring CL, and the third connection part S3 and the fourth connectionpart S4 may be arranged while having an angle with the second straightline L2.

Referring to FIG. 5 , the third connection part S3 and the fourthconnection part S4 may each be obliquely arranged to have an obtuseangle with the second straight line L2 and have an acute angle with thecentral wiring CL. With respect to obliqueness, in the presentembodiment, the third connection part S3 or the fourth connection partS4 may be arranged to have an angle ranging from about 30 degrees toabout 60 degrees with respect to the reference line (the X-axis). Thismay mean that an angle formed between the third connection part S3 orthe fourth connection part S4 and the central wiring CL may range fromabout 30 degrees to about 60 degrees. In the present embodiment, thefirst connection part S1 and the fourth connection part S4 may beparallel to each other, and the second connection part S2 and the thirdconnection part S3 may be parallel to each other.

The third auxiliary wiring SL3 is equal to the second auxiliary wiringSL2, and thus, redundant descriptions thereof are not provided here.

In this manner, in the display apparatus according to the presentembodiment, a shape of the wiring 51 of the wiring unit 50 above thebending area BA is formed as illustrated in FIG. 5 , and thus, thedisplay apparatus is strong against stress and has a structure capableof detouring a crack even if the crack occurs in a specific part of thewiring 51, such that it is possible to prevent complete disconnection ofthe wiring 51.

The central wiring CL of the wiring 51 has the straight shape such thatstress that is applied to the wiring 51 is equally dispersed on theentire region of the bending area BA, and thus it is possible to preventstress from being concentrated at a particular portion. Also, becausethe first auxiliary wiring SL1, the second auxiliary wiring SL2, and thethird auxiliary wiring SL3 are alternately arranged at either side ofthe central wiring CL, when a crack occurs at the central wiring CL, asignal flows in the first auxiliary wiring SL1, the second auxiliarywiring SL2, and the third auxiliary wiring SL3, such that it is possibleto prevent complete disconnection of the wiring 51.

FIG. 6 is a plan view of a structure of a wiring 51′ according toanother exemplary embodiment.

Referring to FIG. 6 , the wiring 51′ may include a first central wiringCL1, a second central wiring CL2 positioned at one side of the firstcentral wiring CL1 by having a certain distance therebetween, a thirdcentral wiring CL3 positioned at the other side of the first centralwiring CL1 by having a certain distance therebetween, first and secondbridge wirings BL1 and BL2 electrically connecting the first centralwiring CL1 with the second central wiring CL2, and third and fourthbridge wirings BL3 and BL4 electrically connecting the first centralwiring CL1 with the third central wiring CL3.

The first and second bridge wirings BL1 and BL2 connecting the firstcentral wiring CL1 with the second central wiring CL2, and the third andfourth bridge wirings BL3 and BL4 connecting the first central wiringCL1 with the third central wiring CL3 are portions of the wiring 51′that are distinguished depending on shapes and may be integrally formed.

The first central wiring CL1, the second central wiring CL2, and thethird central wiring CL3 may each have a straight shape extending alongone axis on an entire region of the bending area BA. The straight shapedoes not correspond to particular portions of the first central wiringCL1, the second central wiring CL2, and the third central wiring CL3but, on the entire region of the bending area BA, the first centralwiring CL1, the second central wiring CL2, and the third central wiringCL3 each have the straight shape without having a bent portion. Thefirst central wiring CL1 among them may be understood as a main wiringconfigured to function as a center of the structure of the wiring 51′.

The second central wiring CL2 may be positioned at one side of the firstcentral wiring CL1, and the third central wiring CL3 may be positionedat the other side of the first central wiring CL1. The second centralwiring CL2 and the third central wiring CL3 may each be spaced apartfrom the first central wiring CL1 by the same distance. The secondcentral wiring CL2 and the third central wiring CL3 that arerespectively positioned at both sides of the first central wiring CL1are configured to disperse stress and provide a detour path for a casewhere a crack occurs at the first central wiring CL1.

The first and second bridge wirings BL1 and BL2 configured toelectrically and structurally connect the first central wiring CL1 withthe second central wiring CL2 may be provided between the first centralwiring CL1 and the second central wiring CL2. As illustrated in FIG. 6 ,in the structure, the first and second bridge wirings BL1 and BL2 mayobliquely connect the first central wiring CL1 with the second centralwiring CL2. In the present embodiment, the first and second bridgewirings BL1 and BL2 may be parallel to each other.

The third and fourth bridge wirings BL3 and BL4 configured toelectrically and structurally connect the first central wiring CL1 withthe third central wiring CL3 may be provided between the first centralwiring CL1 and the third central wiring CL3. As illustrated in FIG. 6 ,in the structure, the third and fourth bridge wirings BL3 and BL4 mayobliquely connect the first central wiring CL1 with the third centralwiring CL3. In the present embodiment, the third and fourth bridgewirings BL3 and BL4 may be parallel to each other.

In the present embodiment, the third bridge wiring BL3 may be providedbetween the first bridge wiring BL1 and the second bridge wiring BL2. Inthe structure of the wiring 51′ of FIG. 6 , the structure is repeatedlyformed, and by doing so, all bridge wirings, i.e., the first, second,third, and fourth bridge wirings BL1, BL2, BL3, and BL4, are alternatelypositioned. By alternately positioning the bridge wirings BL1, BL2, BL3,and BL4, it is possible to prevent stress from being concentrated at aparticular portion.

Referring to FIG. 6 , the bridge wirings BL1, BL2, BL3, and BL4 may eachbe obliquely arranged with respect to central wirings, i.e., the first,second, and third central wirings CL1, CL2, and CL3. With respect toobliqueness, in the present embodiment, the bridge wirings BL1, BL2,BL3, and BL4 may each be arranged to have an angle θ2 ranging from about30 degrees to about 60 degrees with respect to a reference line (anX-axis). This may mean that an angle formed between each of the bridgewirings BL1, BL2, BL3, and BL4 and each of the central wirings CL1, CL2,and CL3 may range from about 30 degrees to about 60 degrees.

In other words, referring to the second bridge wiring BL2 as an example,one end of the second bridge wiring BL2 makes a first junction C1 bycontacting the first central wiring CL1, and the other end of the secondbridge wiring BL2 makes a second junction C2 by contacting the secondcentral wiring CL2. In the present embodiment, a straight line thatvirtually connects the first junction C1 to the second junction C2 maybe oblique with respect to the reference line (the X-axis) by the angleθ2 ranging from about 30 degrees to about 60 degrees. In this manner, byobliquely positioning the bridge wirings BL1, BL2, BL3, and BL4 with theaforementioned angle, it is possible to prevent stress from beingconcentrated at a particular portion.

In the embodiment of FIG. 6 , the bridge wirings BL1, BL2, BL3, and BL4are obliquely provided in one direction, but in another embodiment, thefirst and second bridge wirings BL1 and BL2 may be provided in parallel,and the third and fourth bridge wirings BL3 and BL4 may be provided inparallel to each other in a direction crossing the first and secondbridge wirings BL1 and BL2.

FIG. 7 is a plan view of a structure of a wiring 51″ according toanother exemplary embodiment.

Referring to FIG. 7 , the wiring 51″ may include a first central wiringCL1 having a straight shape, a second central wiring CL2 positioned atone side of the first central wiring CL1 by having a certain distancetherebetween, a third central wiring CL3 positioned at the other side ofthe first central wiring CL1 by having a certain distance therebetween,first and second bridge wirings BL1 and BL2 electrically connecting thefirst central wiring CL1 with the second central wiring CL2, and thirdand fourth bridge wirings BL3 and BL4 electrically connecting the firstcentral wiring CL1 with the third central wiring CL3.

Compared to the wiring 51′ of FIG. 6 , the wiring 51″ of FIG. 7 isdifferent in arrangement directions of bridge wirings, i.e., the first,second, third, and fourth bridge wirings BL1, BL2, BL3, and BL4.

The first and second bridge wirings BL1 and BL2 configured toelectrically and structurally connect the first central wiring CL1 withthe second central wiring CL2 may be provided between the first centralwiring CL1 and the second central wiring CL2. As illustrated in FIG. 7 ,in the structure, the first and second bridge wirings BL1 and BL2 mayobliquely connect the first central wiring CL1 with the second centralwiring CL2. In the present embodiment, the first and second bridgewirings BL1 and BL2 may be provided in a direction crossing each other.

The third and fourth bridge wirings BL3 and BL4 configured toelectrically and structurally connect the first central wiring CL1 withthe third central wiring CL3 may be provided between the first centralwiring CL1 and the third central wiring CL3. As illustrated in FIG. 7 ,in the structure, the third and fourth bridge wirings BL3 and BL4 mayobliquely connect the first central wiring CL1 with the third centralwiring CL3. In the present embodiment, the third and fourth bridgewirings BL3 and BL4 may be provided in a direction crossing each other.

In the present embodiment, the first bridge wiring BL1 and the thirdbridge wiring BL3 may be provided in parallel to each other, and thesecond bridge wiring BL2 and the fourth bridge wiring BL4 may beprovided in parallel to each other.

The bridge wirings BL1, BL2, BL3, and BL4 may each be obliquely arrangedwith respect to central wirings, i.e., the first, second, and thirdcentral wirings CL1, CL2, and CL3. With respect to obliqueness, in thepresent embodiment, the bridge wirings BL1, BL2, BL3, and BL4 may eachbe arranged to have an angle θ3 ranging from about 30 degrees to about60 degrees with respect to a reference line (an X-axis). This may meanthat an angle formed between each of the bridge wirings BL1, BL2, BL3,and BL4 and each of the central wirings CL1, CL2, and CL3 may range fromabout 30 degrees to about 60 degrees.

In the present embodiment, the third bridge wiring BL3 may be providedbetween the first bridge wiring BL1 and the second bridge wiring BL2. Inthe structure of the wiring 51″ of FIG. 7 , the structure is repeatedlyformed, and by doing so, all bridge wirings BL1, BL2, BL3, and BL4 arealternately positioned. By alternately positioning the bridge wiringsBL1, BL2, BL3, and BL4, it is possible to prevent stress from beingconcentrated at a particular portion.

In other words, referring to the second bridge wiring BL2 as an example,one end of the second bridge wiring BL2 makes a first junction C1 bycontacting the first central wiring CL1, and the other end of the secondbridge wiring BL2 makes a second junction C2 by contacting the secondcentral wiring CL2. In the present embodiment, a straight line thatvirtually connects the first junction C1 to the second junction C2 maybe oblique with respect to the reference line (the X-axis) by the angleθ3 ranging from about 30 degrees to about 60 degrees. In this manner, byobliquely positioning the bridge wirings BL1, BL2, BL3, and BL4 with theaforementioned angle, it is possible to prevent stress from beingconcentrated at a particular portion.

FIG. 8 is a plan view illustrating a cross-section of the displayapparatus of FIGS. 1 and 2 , taken along lines VIII-VIII′ andVIII″-VIII′″ of FIG. 2 .

In FIG. 8 , the cross-section by the line VIII-VIII′ is taken from apixel of the display area DA, and the cross-section by the lineVIII″-VIII′″ is taken from a portion of the wiring unit 50 above thebending area BA of the peripheral area PA.

First, referring to the display area DA, an organic light-emitting diode300 and a thin-film transistor 200 to which the organic light-emittingdiode 300 is electrically connected may be provided on the display areaDA of the substrate 100. Although not illustrated, when required, thethin-film transistor 200 may be provided on the peripheral area PAoutside the display area DA. A thin-film transistor (not shown) providedon the peripheral area PA may be a part of a drive circuit to control anelectric signal applied into the display area DA.

A buffer layer 110 including inorganic materials such as silicon oxide,silicon nitride and/or silicon oxynitride may be provided above thesubstrate 100. The buffer layer 110 may be configured to improveplanarization of a top surface of the substrate 100, or may prevent orminimize penetration of impurities from the substrate 100 into thethin-film transistor 200.

The thin-film transistor 200 may be provided above the buffer layer 110.The thin-film transistor 200 may include a semiconductor layer 211including amorphous silicon, polysilicon, or an organic semiconductormaterial, a gate electrode 213, a source electrode 215 a, and a drainelectrode 215 b.

To assure insulation between the semiconductor layer 211 and the gateelectrode 213, a gate insulating layer 120 including inorganic materialssuch as silicon oxide, silicon nitride and/or silicon oxynitride may beprovided between the semiconductor layer 211 and the gate electrode 213.

In addition, an interlayer insulating layer 130 including inorganicmaterials such as silicon oxide, silicon nitride and/or siliconoxynitride may be provided above the gate electrode 213, and the sourceelectrode 215 a and the drain electrode 215 b may be provided above theinterlayer insulating layer 130.

A planarization layer 140 may be provided above the thin-film transistor200. For example, as illustrated in FIG. 8 , when the organiclight-emitting diode 300 is provided above the thin-film transistor 200,the planarization layer 140 may generally planarize a top surface of aprotective layer covering the thin-film transistor 200. Theplanarization layer 140 may include an organic material such as acryl,benzocyclobutene (BCB), hexamethyldisiloxane (HMDSO), or the like.

The organic light-emitting diode 300 including a pixel electrode 310, anopposite electrode 330, and an intermediate layer 320 including anemission layer and provided between the pixel electrode 310 and theopposite electrode 330 may be provided above the planarization layer140. As illustrated in FIG. 8 , the pixel electrode 310 is electricallyconnected to the organic light-emitting diode 300 by contacting one ofthe source electrode 215 a and the drain electrode 215 b via a contacthole formed in the planarization layer 140.

A pixel-defining layer 150 may be provided above the planarization layer140. The pixel-defining layer 150 has an opening corresponding to eachsub-pixel, i.e., an opening exposing at least a center of the pixelelectrode 310, thereby defining a pixel. Also, the pixel-defining layer150 prevents occurrence of an arc at an edge of the pixel electrode 310,by increasing a distance between the edge of the pixel electrode 310 andthe opposite electrode 330 above the pixel electrode 310. Thepixel-defining layer 150 may include organic materials such aspolyimide, HMDSO, or the like.

The intermediate layer 320 of the organic light-emitting diode 300 mayinclude a small-molecule or polymer material. When the intermediatelayer 320 includes a small-molecule material, the intermediate layer 320may have a structure in which a hole injection layer (HIL), a holetransport layer (HTL), the emission layer, an electron transport layer(ETL), an electron injection layer (EIL), and the like are singularly ormultiply stacked, and may include various organic materials includingcopper phthalocyanine (CuPc),N,N′-Di(naphthalene-1-yl)-N,N′-diphenyl-benzidine (NPB),tris-8-hydroxyquinoline aluminum)(Alq3), and the like. The layers may beformed using a vacuum deposition method.

When the intermediate layer 320 includes a polymer material, theintermediate layer 320 may have a structure including the HTL and theemission layer. In this regard, the HTL may includepoly-(2,4)-ethylene-dihydroxy thiophene (PEDOT), and the emission layermay include poly-phenylene vinylene (PPV)-based polymer materials,polyfluorene-based polymer materials, and the like. The intermediatelayer 320 may be formed by using a screen printing method, an inkjetprinting method, a laser induced thermal imaging (LITI) method, or thelike. The intermediate layer 320 may include one layer extending over aplurality of the pixel electrodes 310, or may include a layer that ispatterned to correspond to each of the plurality of pixel electrodes310.

The opposite electrode 330 may be above the display area DA, and may beprovided above all regions of the display area DA. The oppositeelectrode 330 may be formed as one body extending above the display areaDA and thus may correspond to the plurality of pixel electrodes 310.

The organic light-emitting diode 300 may be easily damaged by externalmoisture or oxygen, and thus, a thin-film encapsulating unit 400 isprovided on the organic light-emitting diode 300 so as to protect theorganic light-emitting diode 300. Although not illustrated, thethin-film encapsulating unit 400 may cover the display area DA and mayextend to the peripheral area PA outside the display area DA.

The thin-film encapsulating unit 400 may include a first inorganic layer410, an organic layer 420, and a second inorganic layer 430.

The first inorganic layer 410 may cover the opposite electrode 330 andmay include silicon oxide, silicon nitride and/or silicon oxynitride.When required, other layers including a capping layer may be providedbetween the first inorganic layer 410 and the opposite electrode 330.Because the first inorganic layer 410 is arranged along a structuretherebelow, a top surface of the first inorganic layer 410 is notplanar.

The organic layer 420 covers the first inorganic layer 410, and unlikethe first inorganic layer 410, the organic layer 420 may generallyplanarize its top surface. The organic layer 420 may includepolyethylene terephthalate, polyethylene naphthalate, polycarbonate,polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, and/orhexamethyldisiloxane.

The second inorganic layer 430 may cover the organic layer 420 and mayinclude silicon oxide, silicon nitride and/or silicon oxynitride. Thesecond inorganic layer 430 may contact the first inorganic layer 410 atan edge of the display area DA, thereby preventing the organic layer 420being externally exposed.

Referring to the peripheral area PA, the wiring unit 50 may be providedabove the bending area BA. The wiring unit 50 may include a plurality ofthe wirings 51, and the plurality of wirings 51 may extend to the firstarea 1A and then may be electrically connected to pixels, respectively,and may extend to the second area 2A and then may be connected to thepad 41 (refer to FIG. 2 ).

In FIG. 8 , the plurality of wirings 51 may include the same material asthe source electrode 215 a and the drain electrode 215 b of thethin-film transistor 200. However, the present disclosure is not limitedthereto, and the plurality of wirings 51 may include the same materialas the gate electrode 213 of the thin-film transistor 200.

Some of the advantages that may be achieved by exemplary embodiments ofthe invention include a display apparatus that is resilient againststress by having the wiring above the bending area have a structurecapable of detouring a crack even if the crack occurs in a specific partof the wiring, such that it is possible to prevent completedisconnection of the wiring.

Although certain exemplary embodiments and implementations have beendescribed herein, other embodiments and modifications will be apparentfrom this description. Accordingly, the inventive concepts are notlimited to such embodiments, but rather to the broader scope of theappended claims and various obvious modifications and equivalentarrangements as would be apparent to a person of ordinary skill in theart.

What is claimed is:
 1. A display apparatus, comprising: a substratecomprising a bending area between a first area and a second area, andbent along a bending axis; a display unit provided over the first areaof the substrate; and a wiring unit provided over the bending area andcomprising a wiring crossing the bending axis, wherein the wiringcomprises a first central wiring having a straight line shape, a secondcentral wiring parallel-positioned at one side of the first centralwiring by having a certain distance from the first central wiring, and afirst bridge wiring obliquely connecting the first central wiring withthe second central wiring, wherein the first central wiring and thesecond central wiring are provided orthogonal to the bending axis. 2.The display apparatus of claim 1, wherein the wiring further comprises asecond bridge wiring that is spaced apart from the first bridge wiringby a certain distance and obliquely connects the first central wiringwith the second central wiring, wherein the first bridge wiring and thesecond bridge wiring are parallel to each other.
 3. The displayapparatus of claim 2, wherein the wiring further comprises a thirdcentral wiring having a straight line shape and parallel-positioned atan opposite side of the first central wiring by having a certaindistance from the first central wiring, and a third bridge wiringobliquely connecting the first central wiring with the third centralwiring, wherein the third bridge wiring is provided between the firstbridge wiring and the second bridge wiring.
 4. The display apparatus ofclaim 1, further comprising a second bridge wiring that is spaced apartfrom the first bridge wiring by a certain distance and obliquelyconnects the first central wiring with the second central wiring,wherein the first bridge wiring and the second bridge wiring cross eachother.
 5. The display apparatus of claim 4, wherein the wiring furthercomprises a third central wiring having a straight line shape andparallel-positioned at an opposite side of the first central wiring byhaving a certain distance from the first central wiring, and a thirdbridge wiring obliquely connecting the first central wiring with thethird central wiring, wherein the third bridge wiring is providedbetween the first bridge wiring and the second bridge wiring.
 6. Thedisplay apparatus of claim 5, wherein the wiring further comprises afourth bridge wiring that obliquely connects the first central wiringwith the third central wiring and is spaced apart from the third bridgewiring by a certain distance, wherein the first bridge wiring isprovided between the third bridge wiring and the fourth bridge wiring.7. The display apparatus of claim 1, wherein the wiring unit is a datawiring unit configured to transmit a data signal to the display unit.